Interference Lilac glows with a transparent shine of violet when glazed over dark colours or painted directly onto black paper, and when painted on white paper, Interference pigments display a subtle sheen. 
Interference Watercolours, part of the DANIEL SMITH Luminescent Watercolours collection, refract light, causing light to scatter.   
Why choose Luminescent Watercolours?  Because Nature has optical surprises in the colours that you see in birds’ feathers, insects, fish, and seashells, many flowers also have a pearly, dewy sheen to them.  
Consider the iridescence of a snail’s trail or a silvery spider’s web. Other things that also have a sparkle, or glow depending on the light, a silvery or golden moon, clouds aglow at sunset, rainbows, the sparkle of snow and ice, and glint of water reflections.
Don’t forget the sheen of metals like pewter, copper, silver, and gold. There are also mythic subjects that are often thought of as having a special  iridescence to them such as fairies, dragons, mermaids and other fantasy figures.  
DANIEL SMITH Luminescent Watercolours add that touch of special colour found in nature that regular colours cannot match. They’re made from mica pigment, thin transparent particles coated with highly reflective metal oxides.  
Luminescent Watercolours show best as glazes over darker colours and are excellent mixed with other colours adding a bit of their luminescent glow.
Pigment: PW 20, PW 6 | Series: 1
Lightfastness: I – Excellent
Transparency: Transparent
Staining: 1-Non-Staining
Granulation: Non-Granulating